1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d695649f42553d8cbfa93efa5ea43c91b5148a4f3983ee60c2fabc575de1e4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57af7517-260e-4f3a-979e-cac526ec6d7d.json and https://artists.proofprofile.net/proofs/artist/57af7517-260e-4f3a-979e-cac526ec6d7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba783da6c502a0fb43922f238ef943cab84892cb5b20f612f2bd82568deb8496. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf825dceb9eab074d54b3f9d6c232e1743e6dbe2c722a9bb655c18b7b2c52c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef12cab85eed0d4e190428ee854ac0138800e360f5827bba662f4d4f0f2cfe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c8833a03835be2fb740ff5747496ba801634c5cef2384de0a095f9c52aac9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf89333a8099a491def7d5877783638f2a7faeb16cf8eabc7688bb3095015c97. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f5d15f8548bf03a7023e0b2b38a6cd98e42f743da2396c7f13ca048776b0e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d50de5b7b07e0a38968deaa18af196cd158bc02119364635a98ccca85786c0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237ef386eb299876041f9e8264d1a93abfe3993a565142265f0576fda31afaa6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e1a174899c42d474b41cb4daad57a64b13cbfc45804327e36797d4b3fe09c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b17cf1165065ab0c53f89ba05251170908550206b806afd0af805158c5f86d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc3b64d112699a7db561b10490bd393f76f2c9a4cd3e7615bad1b4200da455. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90ba3024decf2ecef63223aa35c67f717f064a4d0303e243b52f3e135652dc2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ab1255bce657af2b4073358d909bca1828f3d4d13ec1be612230a210a76eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59748a9c8796480fc433b00b717b2d9d1073a1c6091160cb515fbdda1a412309. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce3b62c0eb81af8a16e77a53c92a97877ad282a3390c06ae6b0a504763957b5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a1480efc735c18c75d0f6d57f569105b00a4e71b57adea89d40b585f846b9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc81b6d1bfd14140ff3b9479f989afa7625f1fcbb0258312508fd7c1e05d2e7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d1a5e5e58d7f0da27c4f0effd978937b7642916d11537f696bdd2c9330432e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b4af8363593b687963363272b83c4bdb90268812eb461dc50b3f14a82c6028. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f44ec9c91c1d96a8c93e3c475fba42ce62728d386f135bb7331f0d1c852af9. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bd8d851f75b604c324916a16239e71f5b4b856bbaf56926b0a48b626cb35dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab51863e022cae362fa507213d53a5672be64f1003e6d3e0803957176678bcc3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c6949554b35f89c3e15912423af38240b8d5c691037188832b5d2c5faf7ace. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:38:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2409928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f2caf0b09aa14ff1c2f5cbea0e29cb49bbb4e46726aeb4b0a72234ba7b38f7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a82463c7e6500c61e10cbe87d3ad4c55b59345e88bf514820d87fdda75871e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6958c7b9b502fec0bef2f13594b2abdd6d7be33b960b9273fe9b06e3edbcb8f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce3893a602c665f7e19452ea0258b0f3da702a859b7acc789f6718975907238. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a42ffa88bcff1396250954dc89cc9cfab5a7ac0473a20291c4f13fda8b1bf4a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a6b81207cdca53931e56f9a53aa32a37e74b8f4b0dc952131bf9d343ec021. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16ce0e79c17cf52118967599f1b51ed9108fcba2605f1dcd961a22bcbcb81fe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea3ccdead639e1372ac235810124be862c3dc2753f77ee3a67a6ba63e7e4eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0981ec3c0bb3d0df42213ec674b1ea4c5139984fb2bc3a7dd6c8f73379e12cd3. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26c2745f05f0477ead02c5b6668b8f48ccae09be246a7e5801849a25e37398f. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2414224.